Cracking the SAT Physics Subject Test
(E) The time required for the block to travel from X to Y If ω = , and the distance between O and Y is d, what is the speed of ...
How much work is done by the electric field created by the stationary charge +Q = +2.0 C to move a charge of +1.0 × 10−9 C from ...
(B) (C) (D) (E) An object is placed 100 cm from a plane mirror. How far is the image from the object? (A) 50 cm (B) 100 cm (C) ...
the light pulse to travel from the planet to the ship? (A) 0.5 sec (B) 1.0 sec (C) 1.5 sec (D) 2.0 sec (E) 2.5 sec STOP If you f ...
Chapter 19 Practice Test 1: Answers and Explanations ...
PRACTICE TEST 1 ANSWER KEY ...
...
PRACTICE TEST 1 EXPLANATIONS A Momentum is mass times velocity. Since the mass of the object is just a positive constant, the g ...
D Impulse is defined as a change in momentum, so it therefore has the same units as momentum. C If an object’s speed is changin ...
gravitational force due to the earth (mass M), we can write. Solving for v gives us v =. This result tells us that the mass of t ...
E Since Coulomb’s law is an inverse-square law (that is, F is inversely proportional to r^2 ), if r decreases by a factor of 2 ...
be (A). E We know that like charges repel and opposite charges attract. So, we can put Charges 1, 2, 3, and 4 into two “camps.” ...
to the impulse, which is the area under the force versus time graph. The region under the graph from t = 0 to t = 0.4 sec is com ...
D All linear dimensions within the plate—including the radius and circumference of the hole—will increase by the same amount du ...
D To balance the superscripts, we write 2 + 2 = 3 + A, and get A = 1. Now, to balance the subscripts, we write 1 + 1 = 2 + Z, s ...
B The energies emitted during electron transitions are equal to the differences between the allowed energy levels. Choice (A), ...
E The capacitance of a parallel-plate capacitor is C = Kε 0 A/d, where K is the dielectric constant, A is the area of each pla ...
D The period, T, is the reciprocal of the frequency, and the frequency, f, always satisfies the equation λf = v. So, we find th ...
Note that F 2 and F 3 are each larger than F 1 since FE =. Therefore, F 2 + F 3 is also larger than F 1. C Torque is equal to r ...
the field lines at the position of the loop. No change in magnetic flux means no induced emf and no induced current. E If the e ...
«
33
34
35
36
37
38
39
40
41
42
»
Free download pdf